Description
An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.
Published: 2022-03-23
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-5127-1 linux security update
Debian DSA Debian DSA DSA-5173-1 linux security update
EUVD EUVD EUVD-2021-34056 An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.
Ubuntu USN Ubuntu USN USN-5278-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5337-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5368-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5467-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5500-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5505-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5513-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-5515-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5541-1 Linux kernel (Azure) vulnerabilities
History

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Subscriptions

Broadcom Brocade Fabric Operating System Firmware
Debian Debian Linux
Linux Linux Kernel
Netapp H300s H300s Firmware H410c H410c Firmware H410s H410s Firmware H500s H500s Firmware H700s H700s Firmware
Oracle Communications Cloud Native Core Binding Support Function
Redhat Enterprise Linux Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:16:04.250Z

Reserved: 2022-01-03T00:00:00.000Z

Link: CVE-2021-4197

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-03-23T20:15:10.200

Modified: 2024-11-21T06:37:07.517

Link: CVE-2021-4197

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-09-12T09:00:00Z

Links: CVE-2021-4197 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses